Does my manufacturing facility need a Storm Water Pollution Prevention Plan (SWPPP)?

Do You Need a SWPPP? If all your manufacturing is indoors and not exposed to any rainfall, the answer is no. You don’t need a SWPPP, but you will need to submit a No Exposure Certificate to the Texas Commission on Environmental Quality (TCEQ). If you have anything sitting outside — pipe, raw material or even an empty container — you need to either bring it inside or be subjected to the storm water regulations. Notice of Intent If you are subject to the storm water regulations, you will need to submit a Notice of Intent (NOI) in order to discharge ... » Read More

Clean Water

What Does Clean Water Really Mean?

The words clean water mean different things to different people. Is clean water, water that has absolutely no contaminants at all? Or is clean water, water that may have some contaminants but not at levels you can taste or that are harmful to human health? What Lawyers Will Say About Clean Water Environmental Lawyers will tell you that clean water may have the presence of contaminants, as long as they are below the contaminant levels as set forth in the EPA Drinking Water Standards.   Environmental Lawyers prefer to call water with contaminants, impacted water. And they insist that as long ... » Read More

Water Reuse in Food Processing

Water Reuse in the Food Processing Industry

Water Reuse in Food Processing? Never. Using recycled water — no matter how well it is treated — in contact with the food product being processed is unheard of. The food processing industry has very high standards for food processing.  Even the thought of using recycled waste water for the processing of food is avoided. Even though the treated water may be fine, the perception of using recycled water in contact with food is poorly received. What Does Clean Really Mean? This raises the question of just what is clean. And what does clean really mean? We will attempt to ... » Read More

My Wastewater Stinks Like Rotten Eggs

We received a call last week from a company complaining that the wastewater in the collection pit of their wash bay stunk so bad the workers were not wanting to work. They complained that the wash water in the collection pit smelled like rotten eggs. Hydrogen Sulfide Stinks That rotten egg smell is Hydrogen Sulfide gas (H2S).  This gas is produced by what are called anaerobic (no oxygen) bacteria. Anaerobic bacteria can live in the sludge that settles to the bottom of your collection pit. You can often see small bubbles of this gas coming to the top of the ... » Read More

Ozone in Wastewater Treatment

Some History Ozone has been used in wastewater treatment for over 100 years.  Historically, its main use has been drinking water disinfection.   In Europe ozone treatment of drinking water is common.   In more recent years ozone has been used to treat wastewater for odor control and corrosion control. Ozone Oxidation Ozone is a naturally occurring form of atmospheric oxygen.   The oxygen we breath in has two atoms, Ozone has three.   The third atom of oxygen makes the ozone molecule highly unstable and highly reactive with a very high oxidation potential. Other oxidants such as hydrogen peroxide, sodium hypochlorite (bleach) and ... » Read More

Lowering BOD

Lowering BOD

What is BOD? BOD is Biochemical Oxygen Demand. It is a common yardstick used to determine the strength of wastewater.   It is a test conducted over 5 days and measures the oxygen uptake in mg/l. Your City municipal sewage treatment plant does not want high BOD wastewater as it increases the treatment time and the cost of treating.   Typical BOD from the average household is around 350 mg/l, industrial wastewater can go into the thousands of mg/l BOD. Lowering BOD to Avoid Fees Most municipalities will charge a fee for high BOD.   Take a look at your water and sewer ... » Read More

Granular Activated Carbon GAC

Which Chemicals Will Granular Activated Carbon (GAC) Adsorb?  A Quick Reference Guide.

I get asked all the time about specific chemicals and the probability of being adsorbed by Granular Activated Carbon.   Below is a quick reference guide.   Always ask your carbon supplier for the GAC Adsorption  isotherm for the chemical you want to remove.  The GAC Isotherm will show you the mg of chemical adsorbed per mg of GAC at constant temperature.   Also, bench scale testing is important as certain adsorption rates are affected by pH, soaps and by the presence of Chelating Compounds such as EDTA. Group 1: Chemicals readily adsorbed by Granular Activated Carbon (GAC) GAC commonly used to remove ... » Read More

Waste Water Treatability Testing with Clay Based Flocculants

A printing company in the Dallas area had a wastewater problem. The city of Dallas does not allow dye or inks that discolor the waste water and issued a Notice of Violation stating that the waste water must be pre-treated before discharge to the sewer or to stop the discharge. The company stopped the discharge and began to have waste water hauled off site for disposal. At the same time an internet search for treating options was conducted. Wilson Environmental was contacted and we offered to do a free treatability test. Our treatability test is simply a yes or no ... » Read More

Package Plants for RV Parks and New Home Developments in Texas

Planning to build homes or an RV Park on your property? Don’t have access to city sewer? Better check out the state permit requirements for your planned development first. Sewage treatment for RV parks or residential developments in Texas is explained below. A permit known as a TPDES (Texas Pollutant Discharge Elimination System) Permit is required to discharge any treated waste water or treated sewage to any body of water in the state of Texas. That includes rivers, lakes, streams and even dry creeks. The permitting process is a two-step process. Step 1 Step 1 is to request what is ... » Read More

Wash bay design mistake

Don’t Make this Wash Bay Design Mistake

An all too common wash bay design mistake I was recently working at an oil field service company in Houston and needed to walk out in the wash bay. It was a brand new wash bay, everything looked great. But I couldn’t believe it, the floor was slippery as an ice rink. I could barely walk across the floor. The construction contractor had put a smooth polished concrete finish on the wash bay floor. Add water, soap and the grease from the parts being washed and the floor turned into a slippery mess. The entire wash bay was a gigantic ... » Read More